How to get UIViewController of a UIView's superview in iOS?

Question

I have a UIViewController in which I have a UITextView added from interface builder. Now I want to push a view when I click on hyperlink or phone number. I am able to detect that which url is clicked using a method I found in stackoverflow. Here is the method

@interface UITextView (Override) @end  @class WebView, WebFrame; @protocol WebPolicyDecisionListener;  @implementation UITextView (Override)  - (void)webView:(WebView *)webView decidePolicyForNavigationAction:(NSDictionary *)actionInformation request:(NSURLRequest *)request frame:(WebFrame *)frame decisionListener:(id < WebPolicyDecisionListener >)listener {     NSLog(@"request: %@", request); } @end 

Now I want to get the viewController of the textview's superview so that I can push another viewController when I click on URL/Phone Number.

Answer 1

You can't access it directly, but you can find the next view controller (if any) by traversing the responder chain.

This is how the Three20 framework does it:

- (UIViewController*)viewController {     for (UIView* next = [self superview]; next; next = next.superview)     {         UIResponder* nextResponder = [next nextResponder];          if ([nextResponder isKindOfClass:[UIViewController class]])         {             return (UIViewController*)nextResponder;         }     }      return nil; }